Rail for an architectural covering



FIG. 1 is an isometric view of a rail for an architectural covering in accordance with the present design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a left side elevational view thereof.

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The break lines shown in FIGS. 1-3, 6 and 7 symbolize breaks in the length of the article in which the claimed design is embodied. The appearance of any portion of the rail for an architectural covering between the break lines forms no part of the claimed design. 

CLAIM We claim the ornamental design for a rail for an architectural covering, as shown and described. 